Home » Program » ImageMagick (convert) (Tag: )

ImageMagick (convert)

2012/10/05 06:31

携帯電話を ARROWS X F-10D に変更した後、調査不足かもしれませんが写真の解像度が 3M か 13M しか選択出来なくなりました。

3M では以前使用していた X06HTII よりも劣るため 13M に設定すると、今度はサイズが大きすぎてストレートに投稿出来ません。

一律に半分程度のサイズにすれば X06HTII の時と差程変わらないサイズに落とせると考えた時、ImageMagick の convert コマンドを思い出しました。

ImageMagick (イメージマジック) は画像を操作したり表示したりするためのソフトウェアスイートである。GIF, JPEG, JPEG 2000, PNG, PDF, Photo CD, TIFF, DPXなど 100 種類以上の画像ファイルフォーマットに対応している

Drive Network でももちろんインストールして提供しています。画像のサイズ変更だけではなく、フォーマット変換 (PNG -> JPG 等) や強調・回転等多機能ですが、投稿前の準備ではサイズ変更のみとシンプルにしています。

convert -geometry 50% DSC_0001.jpg 2012100501.jpg

複数の画像を一括変更する場合は、GUI の画面で開いて保存を繰り返すより圧倒的速いですね。

ARROWS X F-10D は カメラ撮影した画像が 90° 反転して保存される 様なので、縦で撮影した写真を大量に処理する場合は -rotate の出番でしょう。


# man convert | colcrt

convert(1)                                                          convert(1)

       convert  -  convert  between  image formats as well as resize an image,
       blur, crop, despeckle, dither, draw on, flip, join, re-sample, and much

       convert [input-options] input-file [output-options] output-file
                -------------  ----------  --------------  -----------

       The  convert  program is a member of the ImageMagick(1) suite of tools.
       Use it to convert between image formats as well  as  resize  an  image,
       blur, crop, despeckle, dither, draw on, flip, join, re-sample, and much

       For more information about the convert command, point your  browser  to

       Image Settings:
         -adjoin              join images into a single multi-image file
         -affine matrix       affine transform matrix
         -antialias           remove pixel-aliasing
         -authenticate value  decrypt image with this password
         -background color    background color
         -bias value          add bias when convolving an image
                              use black point compensation
         -blue-primary point  chromaticity blue primary point
         -bordercolor color   border color
         -caption string      assign a caption to an image
         -channel type        apply option to select image channels
         -colors value        preferred number of colors in the image
         -colorspace type     alternate image colorspace
         -comment string      annotate image with comment
         -compose operator    set image composite operator
         -compress type       type of pixel compression when writing the image
         -decipher filename   convert cipher pixels to plain pixels
         -define format:option
                              define one or more image format options
         -delay value         display the next image after pausing
         -density geometry    horizontal and vertical density of the image
         -depth value         image depth
         -display server      get image or font from this X server
         -dispose method      layer disposal method
         -dither method       apply error diffusion to image
         -encipher filename   convert plain pixels to cipher pixels
         -encoding type       text encoding type
         -endian type         endianness (MSB or LSB) of the image
         -family name         render text with this font family
         -fill color          color to use when filling a graphic primitive
         -filter type         use this filter when resizing an image
         -flatten             flatten a sequence of images
         -font name           render text with this font
         -format "string"     output formatted image characteristics
         -fuzz distance       colors within this distance are considered equal
         -gravity type        horizontal and vertical text placement
         -green-primary point chromaticity green primary point
         -intent type         type of rendering intent when managing the image
         -interlace type      type of image interlacing scheme
         -interpolate method  pixel color interpolation method
         -label string        assign a label to an image
         -limit type value    pixel cache resource limit
         -loop  iterations      add Netscape loop extension to your GIF anima-
         -mask filename       associate a mask with the image
         -matte               store matte channel if the image has one
         -mattecolor color    frame color
         -monitor             monitor progress
         -orient type         image orientation
         -origin geometry     image origin
         -page geometry       size and location of an image canvas (setting)
         -ping                efficiently determine image attributes
         -pointsize value     font point size
         -preview type        image preview type
         -quality value       JPEG/MIFF/PNG compression level
         -quiet               suppress all warning messages
         -red-primary point   chromaticity red primary point
         -regard-warnings     pay attention to warning messages
         -sampling-factor geometry
                              horizontal and vertical sampling factor
         -scene value         image scene number
         -seed value          seed a new sequence of pseudo-random numbers
         -size geometry       width and height of image
         -stretch type        render text with this font stretch
         -stroke color        graphic primitive stroke color
         -strokewidth value   graphic primitive stroke width
         -style type          render text with this font style
         -support factor      resize support: > 1.0 is blurry, < 1.0 is sharp
         -texture filename    name of texture to tile  onto  the  image  back-
         -tile-offset geometry
                              tile offset
         -treedepth value     color tree depth
         -transparent-color color
                              transparent color
         -undercolor color    annotation bounding box color
         -units type          the units of image resolution
         -verbose             print detailed information about the image
         -view                FlashPix viewing transforms
         -virtual-pixel method
                              virtual pixel access method
         -weight type         render text with this font weight
         -white-point point   chromaticity white point

       Image Operators:
         -adaptive-blur geometry
                              adaptively  blur  pixels;  decrease  effect near
         -adaptive-resize geometry
                              adaptively resize image with data dependent tri-
         -adaptive-sharpen geometry
                              adaptively  sharpen pixels; increase effect near
         -annotate geometry text
                              annotate the image with text
         -auto-orient         automatically orient image
         -black-threshold value
                              force all pixels below the threshold into black
         -blur geometry       reduce image noise and reduce detail levels
         -border geometry     surround image with a border of color
         -charcoal radius     simulate a charcoal drawing
         -chop geometry       remove pixels from the image interior
         -clip                clip along the first path from the 8BIM profile
         -clip-mask filename  associate a clip mask with the image
         -clip-path id        clip along a named path from the 8BIM profile
         -colorize value      colorize the image with the fill color
         -contrast            enhance or reduce the image contrast
         -contrast-stretch geometry
                              improve contrast by `stretching'  the  intensity
         -convolve coefficients
                              apply a convolution kernel to the image
         -cycle amount        cycle the image colormap
         -despeckle           reduce the speckles within an image
         -draw string         annotate the image with a graphic primitive
         -edge radius         apply a filter to detect edges in the image
         -emboss radius       emboss an image
         -enhance             apply a digital filter to enhance a noisy image
         -equalize            perform histogram equalization to an image
         -evaluate operator value
                              evaluate  an  arithmetic, relational, or logical
         -extent geometry     set the image size
         -extract geometry    extract area from image
         -flip                flip image vertically
         -floodfill geometry color
                              floodfill the image with color
         -flop                flop image horizontally
         -frame geometry      surround image with an ornamental border
         -function name       apply a function to the image
         -gamma value         level of gamma correction
         -gaussian-blur geometry
                              reduce image noise and reduce detail levels
         -geometry geometry   perferred size or location of the image
         -identify            identify the format and characteristics  of  the
         -implode amount      implode image pixels about the center
         -lat geometry        local adaptive thresholding
         -layers method       optimize or compare image layers
         -level value         adjust the level of image contrast
         -linear-stretch geometry
                              improve contrast by `stretching with saturation'
       the intensity range
         -median radius       apply a median filter to the image
         -modulate value      vary the brightness, saturation, and hue
         -monochrome          transform image to black and white
         -motion-blur geometry
                              simulate motion blur
         -negate              replace every pixel with its complementary color
         -noise radius        add or reduce noise in an image
         -normalize           transform image to span the full range of colors
         -opaque color        change this color to the fill color
         -ordered-dither NxN
                              add a noise pattern to the image  with  specific
         -paint radius        simulate an oil painting
         -polaroid angle      simulate a Polaroid picture
         -posterize  levels     reduce  the image to a limited number of color
         -print string        interpret string and print to console
         -profile filename    add, delete, or apply an image profile
         -quantize colorspace reduce colors in this colorspace
         -radial-blur angle   radial blur the image
         -raise value         lighten/darken  image  edges  to  create  a  3-D
         -random-threshold low,high
                              random threshold the image
         -recolor matrix      translate, scale, shear, or rotate image colors
         -region geometry     apply options to a portion of the image
         -render              render vector graphics
         -repage geometry     size and location of an image canvas
         -resample geometry   change the resolution of an image
         -resize geometry     resize the image
         -roll geometry       roll an image vertically or horizontally
         -rotate degrees      apply Paeth rotation to the image
         -sample geometry     scale image with pixel sampling
         -scale geometry      scale the image
         -segment values      segment an image
         -sepia-tone threshold
                              simulate a sepia-toned photo
         -set property value  set an image property
         -shade degrees       shade the image using a distant light source
         -shadow geometry     simulate an image shadow
         -sharpen geometry    sharpen the image
         -shave geometry      shave pixels from the image edges
         -shear  geometry       slide  one  edge of the image along the X or Y
         -sigmoidal-contrast geometry
                              lightness  rescaling  using  sigmoidal  contrast
         -sketch geometry     simulate a pencil sketch
         -solarize threshold  negate all pixels above the threshold level
         -splice geometry     splice the background color into the image
         -spread amount       displace image pixels by a random amount
         -strip               strip image of all profiles and comments
         -swirl degrees       swirl image pixels about the center
         -threshold value     threshold the image
         -thumbnail geometry  create a thumbnail of the image
         -tile filename       tile image when filling a graphic primitive
         -tint value          tint the image with the fill color
         -transform           affine transform image
         -transparent color   make this color transparent within the image
         -transpose           flip image vertically and rotate 90 degrees
         -transverse          flop image horizontally and rotate 270 degrees
         -trim                trim image edges
         -type type           image type
         -unique-colors       discard all but one of any pixel color
         -unsharp geometry    sharpen the image
         -vignette geometry   soften the edges of the image in vignette style
         -wave geometry       alter an image along a sine wave
         -white-threshold value
                              force all pixels above the threshold into white

       Image Sequence Operators:
         -affinity filename   transform image colors to match this set of col-
         -append              append an image sequence
         -average             average an image sequence
         -coalesce            merge a sequence of images
         -combine             combine a sequence of images
         -composite           composite image
         -crop geometry       cut out a rectangular region of the image
         -deconstruct         break down an image  sequence  into  constituent
         -flatten             flatten a sequence of images
         -fx  expression       apply mathematical expression to an image chan-
         -morph value         morph an image sequence
         -mosaic              create a mosaic from an image sequence
         -process arguments   process the image with a custom image filter
         -separate            separate an image channel into a grayscale image
         -write filename      write images to this file

       Image Stack Operators:
         -clone index         clone an image
         -delete index        delete the image from the image sequence
         -insert index        insert last image into the image sequence
         -swap indexes        swap two images in the image sequence

       Miscellaneous Options:
         -debug events        display copious debugging information
         -help                print program options
         -log format          format of debugging information
         -list type           print a list of supported option arguments
         -version             print version information

       By  default, the image format of `file' is determined by its magic num-
       ber.  To specify a particular image format, precede the  filename  with
       an  image  format name and a colon (i.e. ps:image) or specify the image
       type as the filename suffix (i.e. image.ps).  Specify 'file' as '-' for
       standard input or output.


       Copyright  (C)  1999-2009 ImageMagick Studio LLC. Additional copyrights
       and      licenses      apply      to      this      software,       see

Random Select

Drive Network Philosophy
現在の Drive Network のスタイルに リニューアル 後、SSL 証明書の提供の改善を手掛けました。提供の改善とは、Drive Network でのサービス提供の姿勢ではなく、それまでレンタ
串焼き処 日比谷 鳥こまち (1)
先週の今日は、1 年ぶりに花の 46 年組 (笑) の 1 人と飲み会でした。沖縄出身ですが現在はタイで奮闘しているスタッフが久しぶりに国内での仕事の後に、東京オフィスからも近い有楽町に立ち寄ってくれ
つけ麺 (中)
有楽町・銀座には私用で月に 2, 3 回は訪れていますが、タイミングが合えば 三田製麺所 有楽町店に行くことがあります。濃厚豚骨魚介スープをうたうお店は最近はめずらしくありませんが、ここのスープは本当
寿がきや 富山ブラック (1)
近所のコンビニエンスストアで、ある日偶然にも珍しいカップラーメン 寿がきや 全国麺めぐり 富山ブラック を見つけました。2 年前に 富山出張 (No. 3 – 富山ブラック) を初めて体験
普段沖縄へは羽田空港 -> ANA, SKY, JAL のいずれかで那覇空港に移動しますが、一度 Jetstar – ジェットスター を試してみたいと思っていました。便数が限られるこ
ノルウェー産 サーモンフライ (2)
My Select "日本一シリーズ" 第 6 弾は再び御茶ノ水の老舗、日本一美味しい豚の生姜焼き 同様 20 年来通い続けている キッチン カロリー です。改めて店の看板を見ると
VAIO Fit 13A (背面)
Windows 8 -> 8.1 でスタートボタンが復活しても大いに肩透かしを受けた感じが一般的の様ですが、私は右クリックをした場合は重宝していますが Classic Shell を入れる程不
radserv ope 04
これは、radserv X (T8100) のハードディスクの換装作業のショットです。納品時は 1TB x 2 でしたが、2TB x 2 に換装しています。では、手術風に。正中切開します。 
ハッシュ・ド・ビーフ 材料
IT 業界に入ったのが 1999/03 でしたが、それまで 10 年程はずっと飲食業界にいました。マクドナルド・ドトールあたりは長期間でしたが、短期でも色々なお店を見て来ました。まかないもうれしいです
TEJ-75 + Marshall
My Guitar でスタジオインした時の別カットです。プラグを差し替えて音を出せば、気分は PATA (X) 全開。前回 17, 8 年ぶりに行ってからあっと言う間に 6 ヶ月過ぎているので、近々行
Valid HTML5 Valid CSS3 Another HTML Lint